diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 2f3715a8..5e9964a5 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -16,7 +16,12 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
 
-      - name: Format Rust code
+      - name: Install nightly rustfmt
+        run: |
+          rustup default nightly
+          rustup component add rustfmt
+
+      - name: Check Rust formatting
         run: cargo fmt --all -- --check
 
   cargo:
diff --git a/rustfmt.toml b/rustfmt.toml
index 2b1dd5bb..40b837b3 100644
--- a/rustfmt.toml
+++ b/rustfmt.toml
@@ -1,2 +1,2 @@
-# imports_granularity = "module"
+imports_granularity = "module"  # Please use nightly for this setting.
 max_width = 90